Use the following data to determine the AH° for the conversion of diamond into graphite: C(s,diamond) +0,(g) Co,(g) AH°= -395.4 kJ 200,(g) 2c0(g) +0,(g) AH°= 566.0 kJ 2C0(g) C(s.graphite) + CO,(g) AH°= -172.5 kJ C(s,diamond) AH° = →C(s,graphite) kJ

Q: 4NH3(g) +50₂(g) = 4NO(g) + 6H₂O(g) ΔΗ° = -1000. kJ K = 1.35 When the reaction is altered as below,…

A: When an equation is reversed (written in the opposite reaction), the sign of ΔHo must also be…

Q: Consider the following data. N₂(g) + O₂(g) = 2 NO(g) 2 H₂O(1)=2 H₂(g) + O₂(9) 4 NO(g) + 6 H₂0 (1) =…

A: Hess's law states that the enthalpy of a reaction is independent of the number of steps or chemical…

Q: A geochemist in the field takes a 46.0 mL sample of water from a rock pool lined with crystals of a…

A: Given data :  1) volume of water = 46.0 mL 2) weight of compound X = 10.6 g

Q: umts OI KJ/IIOI. Consider the dissolution of CaCl2: CaCl,(s) → Ca²*(aq) + 2CI¯(aq) AH = -81,5 kJ An…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: The following questions refer to the reaction below. N2(g) + O2(g) - 2 NO(g) AH° = 181.8 kJ 1. This…

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Q: Given the standard enthalpy changes for the following two reactions: (1) N2(g) +…

A: The reactions given are 1) N2 (g) + 2 O2 (g) -----> N2O4 (g)…

Q: Given the following thermochemical data at 25°C and 1 atm pressure, 3/2 02(g) + 2B(s) = -1264 kJ; -…

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Q: Calculate ΔH for the reaction (1) 2C (s, graphite) + H2(g) --> C2H2(g). given the following…

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Q: Calculate the standard heat of formation of calcium carbide, CaC2(s), in kJ/mol, using the following…

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Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.